The 1986 Allegro Motorhome Service Manual provides comprehensive maintenance, repair, and operational guidance for the Allegro motorhome models manufactured in 1986. This manual covers chassis maintenance, engine systems, electrical systems, plumbing, HVAC, appliances, body repair, and troubleshooting procedures specific to the 1986 model year. Below are key sections for maintenance schedules, systems overview, troubleshooting, and technical specifications.
This manual covers the 1986 Allegro motorhome models including Class A and Class C variants. Always follow safety protocols when performing maintenance.
| Safety Feature | Description |
|---|---|
| Fire Extinguisher | Located near entrance; inspect monthly |
| LP Gas System | Regular leak checks required |
| Electrical Safety | Disconnect shore power before electrical work |
| Jack Stands | Always use when working under vehicle |
| Ventilation | Ensure proper ventilation when running generator |
Follow this schedule to maintain your 1986 Allegro motorhome in optimal condition.
WARNING! Failure to follow maintenance schedule may void warranty and create safety hazards.
The 1986 Allegro motorhome features various chassis options including Ford and Chevy platforms.
Dual electrical systems: 12V DC for coach, 120V AC for shore power.
12V System: Deep cycle batteries, converter/charger, fuse panel. 120V System: Shore power inlet, circuit breakers, outlets.
Maintenance: Check battery terminals for corrosion, test converter output, inspect wiring for damage. Troubleshooting: Use multimeter to test circuits; check fuses and breakers first.
Fresh water, gray water, and black water systems.
Tip: Use RV-specific toilet paper and tank treatments to prevent clogs.
Standard appliances include refrigerator, range, furnace, and air conditioner.
WARNING! Ensure proper ventilation when using LP gas appliances.
Fiberglass exterior with aluminum frame construction.
Maintenance: Inspect roof seals annually, check for delamination, clean and wax exterior. Interior: Check for water damage, maintain upholstery, test all cabinet latches and doors.
| Symptom | Possible Cause | Corrective Action |
|---|---|---|
| Engine won't start | Dead battery, fuel issue | Check battery voltage, inspect fuel pump and filter |
| No 12V power | Blown fuse, battery disconnect | Check main fuse, ensure battery disconnect is on |
| Water pump runs continuously | Leak, pressure switch | Check for leaks, test pressure switch |
| Refrigerator not cooling | LP gas issue, leveling | Check gas supply, ensure unit is level |
| Furnace not igniting | Thermostat, sail switch | Check thermostat setting, test sail switch |
Emergency: For gas leaks, evacuate immediately and call professional.
Original warranty: 1-year limited warranty on coach, 3-year structural warranty. For technical support contact Allegro Customer Service at 1-800-ALLEGRO or visit authorized service centers. Keep maintenance records for warranty claims.